The film formed by surface modification of titanium material on the surface of titanium implants makes the implants have better wear resistance and corrosion resistance and biocompatibility. This kind of surface modification of titanium implants has been widely accepted and applied in clinical medicine at home and abroad.As the surface treatment technology is not up to standard, no domestic orthopedic titanium implant products with reinforced membrane have been put on the market yet, so only high-priced imported similar products can be used.The successful application of PTO technology in orthopedic titanium implants will fill the gap in China.We used PTO technology to treat the surface of titanium bone plates and bone screws, and the surface hardness after treatment was increased by about 3 times. After 10 high temperature and high pressure disinfection tests, the color and luster of the treated samples remained unchanged.
Surface treatment of titanium:
1. Enhanced corrosion resistance treatment:
Atmospheric oxidation treatment and anodic oxidation treatment;Not only can improve corrosion resistance, but also can prevent hydrogen embrittlement;In addition, platinum plating, palladium oxide/titanium oxide treatment;
2. Improved wear resistance:
Nitriding treatment at high temperature (800-900 degrees) makes the surface vickers hardness up to more than 700;Through surfacing welding, appropriate amount of nitrogen or oxygen is added into argon to increase the surface hardness by 2-3 times.Through ion plating, a layer of titanium nitride was generated on the surface, with a thickness of about 5 microns and a vickers hardness of up to 16,000-20000.Chrome plating, etc.;Through the above simple understanding of titanium metal and its alloys, we will also understand some functions of titanium and its alloys in the production of circuit boards, in the use, maintenance and other aspects will be inspired;Titanium is already the third most widely used metal in the future after magnesium and aluminum!
The first research direction is "development and application of surface modification technology of medical titanium".In biomedical metal materials, titanium and its alloys with its excellent comprehensive performance, is the artificial joints, bone trauma products, orthopedic spine internal fixation system, braces, dental implants, artificial heart valve, interventional cardiovascular stents and other medicinal materials of choice for plant products, at present, there's no better than titanium metal materials used for clinical purposes.Over the past 10 years, the market growth rate of biomedical materials and products has been maintained at around 20-25%. It is expected that in the next 10-15 years, the medical device industry including biomedical materials will reach the market scale of pharmaceutical products and become the pillar industry of the world economy in the 21st century.
In recent years, titanium rod and titanium alloy materials have been widely used in biomedicine, daily necessities and industrial fields.This project adopts the new technology of titanium alloy surface modification (PTO process) with independent intellectual property rights and international advanced level, which significantly improves the wear resistance, biocompatibility and surface modification of titanium with advanced technology and low cost, so that titanium material can be widely used.PTO technology is a high - efficiency, energy - saving, resource - saving and environmentally friendly high - tech.